EN-1284S-A
- 5 -
EXPLANATION OF IC
052-0315-00
M30879FLAGP
Microcomputer
[ NOTE ]
When this IC is exchanged, it is necessary to write the program be-
cause the program is not written in this IC.
pin
1: NU
: - : Not in use.
pin
2: IRI
: IN : The remote control signal input.
pin
3: ST EEP SDA
:I/O: Serial data input/output for the Sub-tuner
and the EEPROM.
pin
4: ST EEP CK
: O : Serial clock output to the Sub-tuner and
the EEPROM.
pin
5: BU DET
: IN : Backup detection signal input.
pin
6: BYTE
: IN : Data length selection(8bit/16bit).
pin
7: CN VSS
: IN : Connect to VSS via a resistor.
pin
8: NU
: O : Not in use.
pin
9: SYS ON
: O : System ON signal output.
pin 10: RESET
: IN : Reset signal input.
pin 11: X out
: O : Crystal connection.
pin 12: VSS
: - : Negative voltage supply.
pin 13: X in
: IN : Crystal connection.
pin 14: VCC
: - : Positive voltage supply.
pin 15: NMI
: IN : Nonmaskable interrupt. Connect to VDD
via a resistor.
pin 16: SYS ON IN
: IN : System ON signal input.
pin 17: M CAN RX
: IN : M-CAN serial data input.
pin 18: M CAN TX
: O : M-CAN serial data output.
pin 19: PIC DIAG 1
: IN : Power IC diagnosis signal input.
pin 20: NDS RX
: IN : NDS serial data input from NDS-A/C.
pin 21: NDS REQ
: IN : The request pulse from NDS.
pin 22: NDS TX
: O : NDS serial data output to NDS-A/C.
pin 23: PIC STND 1
: O : Power IC standby signal output.
pin 24: BEEP
: O : Beep out.
pin 25: EXT AMP ON
: O : ON signal output for the external amplifi-
er.
pin 26: NU
: - : Not in use.
pin 27: MT SCK
: O : Serial clock output to the Main-tuner.
pin 28: MT SDA
:I/O: Serial data input/output for Main-tuner.
pin 29: DSP/P-IC CK
: O : DSP/Power-IC clock pulse output.
pin 30: DSP/P-IC DA
:I/O: DSP/Power-IC serial data input/output.
pin 31: FLASH CK
: IN : Flash memory Clock.
pin 32: FLASH BUSY
: O : Flash memory busy signal output.
pin 33: PIC STND 2
: O : Power IC standby signal output.
pin 34: NU
: O : Not in use.
pin 35: NU
: O : Not in use.
pin 36: PIC DIAG 2
: IN : Power IC diagnosis signal input.
pin 37: NU
: O : Not in use.
pin 38: A DIAG ON
: O : Diagnosis control signal output for the
external-amplifier-on-signal-line.
pin 39: FLASH EPM
: O : Flash memory EPM.
pin 40: A DIAG C
: IN : Open detection signal input for the exter-
nal-amplifier-on-signal-line.
pin 41: A DIAG S
: IN : Short detection signal input for the exter-
nal-amplifier-on-signal-line.
pin 42: NU
: O : Not in use.
pin 43: NU
: O : Not in use.
pin 44: FLASH CE
: O : Flash memory Chip enable.
pin 45: NU
: O : Not in use.
pin 46: NU
: O : Not in use.
pin 47: NU
: O : Not in use.
pin 48: NU
: O : Not in use.
pin 49: NU
: O : Not in use.
pin 50: NU
: O : Not in use.
pin 51: NU
: O : Not in use.
pin 52: NU
: O : Not in use.
pin 53: NU
: O : Not in use.
pin 54: NU
: O : Not in use.
pin 55: DSP INT
: IN : Initial signal input from the DSP IC.
pin 56: MT MUTE
: O : Main-tuner mute output.
pin 57: MT SAMPLE
: IN : Main-tuner sample input.
pin 58: NU
: O : Not in use.
pin 59: ST SAMPLE
: IN : Sub-tuner sample input.
pin 60: VDD
: - : Positive voltage supply.
pin 61: NU
: O : Not in use.
pin 62: GND
: - : Ground.
pin 63: ST HOLD
: IN : AF-hold-signal input from the Sub-tuner.
And M-hold signal input from the DSP.
pin 64: ST S METER
: IN : Input of internal A/D converter to monitor
the radio field strength for the Sub-tuner.
pin 65: NU
: O : Not in use.
pin 66: DSP PAUSE
: IN : DSP automatic mute control. L = mute on.
pin 67: MT HOLD
: IN : AF-hold-signal input from the Main-tuner.
And S-hold signal input from the DSP.
pin 68: MT S METER
: IN : Input of internal A/D converter to monitor
the radio field strength for the Main-tun-
er.
pin 69: NU
: O : Not in use.
pin 70: RDS DA 2
: IN : RDS 2 serial data input. (Sub-tuner)
pin 71: RDS CL 3
: IN : RDS 3 serial clock input. (TMS)
pin 72: RDS CL 2
: IN : RDS 2 serial clock input. (Sub-tuner)
pin 73: RDS CL 1
: IN : RDS 1 serial clock output. (Main-tuner)
pin 74: RDS DA 1
: IN : RDS 1 serial data input. (Main-tuner)
pin 75: RDS DA 3
: IN : RDS 3 serial data input. (TMS)
pin 76: M AGC DET
: IN : Main-tuner AGC detection.
pin 77: S AGC DET
: IN : Sub-tuner AGC detection.
pin 78: DSP RESET
: O : Reset signal output to the DSP IC.
pin 79: NU
: O : Not in use.
pin 80: NU
: O : Not in use.
pin 81: NU
: O : Not in use.
pin 82: NU
: O : Not in use.
pin 83: NU
: O : Not in use.
pin 84: RT N OFF
: O : Noise clear signal output to the TMC-tun-
er.
pin 85: RT NOISE
: IN : Input terminal of the internal ADC to
sense the RDS-noise-level from the TMC-
tuner.
pin 86: RT S METER
: IN : Input terminal of internal A/D converter to
monitor the radio field strength for the
TMC-tuner.
pin 87: PHA ON 1
: O : Phantom circuit ON signal output for An-
tenna-1.
pin 88: STBY
: O : The standby signal output.
pin 89: WAR
: IN : Warning signal input from DIAGNOSTIC
PROCESSOR.
pin 90: PHA ON 2
: O : Phantom circuit ON signal output for An-
tenna-2.
pin 91: PHA DIAG B 1 : IN : Phantom power supply line short detection
signal input.
pin 92: P/L
: O : The resistance changing-signal output for
the diagnosis IC.
pin 93: PHA DIAG B 2 : IN : Phantom power supply line short detection
signal input.
pin 94: A VSS
: - : Analog ground.
pin 95: INFO AUX IN
: IN : 0V="+B", 3V="Open", 5V="Ground"
pin 96: Vref
: - : Reference voltage.
pin 97: A VCC
: - : Positive voltage supply for the internal
analog section.
pin 98: DIAG TMC CK : O : Diagnosis & TMC serial clock output.
pin 99: DIAG TMC DA :I/O: Diagnosis & TMC serial data input/output.
pin100: TUNER ON
: O : The tuner ON signal output.